Mackie DX8 instruction manual Rear Panel Features, Mode

MODE

This switch changes the front panel operation between Bus A and Bus B operation. In addition, the LOCK position disables the front panel controls to prevent unauthorized changes to the settings. A security code must be entered to enable the front panel controls when the DX8 is locked. See page 17 for more information on locking and unlocking the DX8.

COMM PORT

This is an RS-232 port on a 9-pin D-Sub connector, which connects to a personal computer or other compatible control system for external control of the DX8 settings. A second COMM port on the rear panel duplicates this function, for permanent connection to an installed controller.

POWER

Use the POWER switch to turn the DX8 on and off.

	OL
	2
	4
	7
	10		DX8 DIGITAL MIXER
	15
	20
	25
	30
	35
	40
	50
		A	B LOCK
A	MASTER	B	MODE
			COMM PORT	POWER

REAR PANEL FEATURES

INPUTS 1-8

Each of the eight analog inputs has separate balanced mic and line input connectors that use Mackie’s acclaimed XDR mic preamps. These are 3- pin Phoenix-type connectors. Use either the MIC or LINE input, but only one can be used per channel.

TRIM

This rotary analog control is used to trim the gain of the input signal for optimum signal-to-noise ratio in the preamp stage. For mic-level signals, it provides from 0 to +60 dB of gain. For line-level signals, it provides from –30 dB to +30 dB of gain, with unity (0 dB) at the center position. This control accepts a maximum input signal of +18 dBu before clipping (at unity gain).

PHANTOM POWER

These switches apply phantom power (+48 VDC) to pins 2 and 3 of the selected mic input connectors. Switch the PHANTOM POWER switch in the UP position for an individual channel when using a condenser microphone.

BUS A/B INPUTS

These analog inputs accept balanced line- level signals and route the signal to the internal buses. These inputs may serve as additional zone inputs for program devices, or to connect the BUS A and BUS B outputs from another DX8. There is no DSP processing on these inputs.

BUS A and B TRIM

These rotary analog controls are used to trim the gain of the inputs to the buses. This trim control provides from –20 dB to +20 dB of gain, with unity (0 dB) at the center-detent position.

DIRECT OUTPUTS

TURING DATE

		U
	IC	G
N	M		N
0	0		60
0dB	-30dB +30dB
	TRIM
	8
	MIC

12	INPUTS	1 +5V
G 11	OUTPUTS	1

LOGIC I/O

PHANTOM POWER

G + –

REMOTE BUS COMM PORT

OUTPUTS

This 15-pin D-Sub connector supplies an analog, unbalanced line-level signal from each of the eight program inputs, post- preamp and pre-processing. Use these outputs to connect to another mixing console for additional zone coverage, to a telephone system for music-on-hold, or to a multi-track recorder. See page 12 for the Direct Output pinouts.

48V DC

ON

A B

A G + – B G + –

1 2 3 4 5 6 7 8

RECORD

DX8 – 5